Triassic
Juassic
The cretaceous period.
The Cretaceous period.
Early Dinosaurs that evolved from the Jurrasic times.
The last non avian dinosaurs lived up until the end of the Cretaceous period, specifically the Maastrichtian stage.However research in the past 20 years has show that birds are in fact dinosaurs that survive to this day.
Birds branched of from a group of dinosaurs called theropods (the two legged dinosaurs consisting mostly of carnivores) in the late Jurassic period.
Yes. Non-avian dinosaurs first appeared in the Triassic period and were around until the end of the Cretaceous period. Birds, which are now classified as dinosaurs, appeared in the late Jurassic and live through the Cretaceous period as well.
theres nothing called priassic,its triassic
The dinosaurs were probably wiped out by the flood of Noah's day.
Grass only evolved late in the Cretaceous period so only the dinosaurs near the end of the age of dinosaurs would have had grass available. Remains of early grasses have been found in dinosaur coprolites of this period.
Ultrasauros dinosaur fossils date from the late Jurassic period. Utahraptor dinosaur lived during the early Cretaceous period.
Dinosaurs and ammonoids appeared in the Triassic period.